Metal door



M. G. MARTIN Feb. 4, 1936.

METAL DOOR Filed April 9, 1954 z`7z BY @g/M ATTORNEY Patented Feb. 4,1936 F'ihri" @FFEQE METAL DOOR Marvin G. Martin, Philadelphia, Pa.,assigner to The E. G. Brill Company, Philadelphia, Pa., a corporation ofPennsylvania.

Application April 9, 1934, Serial No. 719,672

6 Claims.

This' invention relates generally to metal doors and has referenceparticularly to doors adapted for use with vehicles such as railwaycars, buses and the like.

One object of this invention is the provision of a metal door formed ofsubstantially complementally intertted sections.

Another object of this invention is the provision of .a door formed oimetal sections pressed to desired shape, such shape being of such anature that the sections may be easily interfitted and connected.

Another object of this invention is the provision of a metal door forrailway cars, buses, or the like, which is easy and inexpensive tomanufacture and strong and durable in service.

Other objects and advantages oi this invention will be apparent from thefollowing description taken in conjunction with the accompanyingdrawing, in which Figure l is a side elevation of a pair of doors formedin accordance with the present invention, one oi the doors havingportions thereof broken away;

Fig. 2 is a sectional view on the line 2 2, Fig. l;

Fig. 3 is a sectional View on the line 3-3, Fig. l;

Fig. i is an enlarged fragmentary detail View of a portion oi the door,the View being taken at the window opening; and

Fig. 5 is a sectional view on the line ii-5, Fig. 4.

Referring now more particularly to the drawing in which similarcharacters ci reference designate similar parts in the several views,the drawing illustrates doors of the type used in buses in which a pairthereof are hingedly connected together to form a door unit, a pair ofthese units being usually employed for closing a door opening. Each doorsection comprises top and bottom rails A and B, respectively, and stilesC. I'he door of the present invention is provided with longitudinallyspaced openings in which glass panes D are secured.

As shown clearly in the drawing, each door is formed of iront and rearsections 2 and ll, respectively, pressed to the form shown and describedand section 2 thereof is provided with a rearwardly projecting marginalange 5. The sections Z and l are each provided with vertically alinedopenings which receive the glass panes D, the openings in section 2being bounded by a rearwardly projecting flange 8 paralleling but or"greater length than the marginal flange 6, as clearly shown in Fig. 5,and having an inturned attaching flange It which is parallel to the mainor body portion i2 of section 2. From the above (Cl. 18S-46) descriptionit will be apparent that the door section 2 comprises a metal unithaving a marginal flange extending entirely therearound, said unit, atthe window openings, having stiles which are substantially channelshaped in cross section. 5

The rear section 4 comprises a main body portion It having a marginalforwardly projectingy iiange l5 at substantially right angles theretoadapted to rest against the inner surface of the marginal iiange 5 andto be welded to the latter as shown at i8, the weld 8 obviouslyextending entirely around the door. The section i is also provided withwindow openings bounded by an oiset 263 resting against the innersurface of flange 8 of section 2 and by an offset portion 22 extendingfrom offset 2B and tted against the outer surface of flange lil buthaving its end portion folded over ilange l0 after the sections areassembled to cover the latter as shown at 24; the portion 24 of the doorconstituting a shoulder against which the panes D rest. The panes D areof the usual type and are formed preferably oi glass 2", the edgeportions of which are enclosed by resilient strips 28. For securing thepanes D in position suitable retainer strips 30 are provided which aresecured by fasteners 32 eX- tending through flange 8 of section 2 of thedoor and into fillers El! held in the boX sections ofthe doors formed bythe door sections 2 and 4 as clearly shown in Figs. Zand 3.

The doors are of the hinged type and the hinge elements, indicated at B,are secured to the fillers 34 in any suitable manner. Each door unitcomprises a pair of door sections as indicated clearly in Fig. l and apiano type hinge 38 is provided which is secured to contiguous edgeportions of adjacent door sections by suitable fasteners such as bolts4D.

From the above description it is believed that the construction of thepresent invention will be fully apparent to those skilled in the art. Itis obvious that each door is formed of telescopically connected sectionsdue to the provision of the marginal anges on each of the sections, saidflanges being so arranged that they fit one within the other in nestingor irictional engagement. The door sections are pressed to the formshown and, due to the pressing, sharp corners are eliminated, thecorners being rounded and hence the necessity oi cutting and iillingjoints, soldering 50 or welding as has been previously done in the artis eliminated. It will also be apparent to those skilled in the art thatthe doors are so constructed as to provide substantially box sectionssurrounding the window openings this construction obviously providingfor great strength. The drawing illustrates one embodiment of theinvention but it is to be understood that they are for illustrativepurposes only and various changes in ,the form and proportions of thedoor may be made within the scope of the appended claims withoutdeparting from the spirit of the invention.

What is claimed is:

1. In a metal door, one piece front and rear sections having marginalflanges arranged adjacent and in parallel overlapping engagement witheach other, means connecting said sections, said sections havingregistering window openings bounded by continuous offsets pressed ineach section, the material of the rear section being folded over thematerial of the front section entirely around the window openings insuch a manneras to provide a pane receiving shoulder.

2. In a metal door, one piece front and rear sections having marginalilanges arranged adjacent and in parallel overlapping engagement Vwitheach other, weld metal connecting the rear section with the edge portionof the marginal flangeV of the front section, said sections havingIregistering window openings bounded by continuous offsets pressed ineach section, the material Vof the rear section being folded over thematerial of the front section at the window opening in such a manner asto provide a pane receiving shoulder.

3. In a metal door, a one piece front section lhaving a marginal flangeextending entirely therearound, said section having a window openingwith the material of the section at the window opening pressed topresent a continuous portion flanged parallel to the marginal flange andprovided with an inturned portion constituting an attaching flange, anda rear'one piece section having a marginal iiange so formed as to betelescopically received Within the rst named section, weld metalconnecting said sections at the flanges, and a window opening formed inthe window opening being folded about said attaching portion.

5. In a metal door',y one piece front and rear pressed sections eachhaving a marginal ange, said sections being telescopically interfittedand connected and being provided with window openings, a flangesurrounding the window opening in Y the front section and having aportion arranged parallel to the marginal flange but of greater depththan said marginal flange and having another portion inturned atsubstantially right angles to said rst name-d portion and constitutingan attaching iiange, the rear section being provided with an offsetarranged in engagement with the iiange surrounding the windowopening inthe front section and the oiset portion having a part adapted Vto befolded over the Y attaching portion.

6. In a metal door, one piece front and rear pressed sectionstelescopically intertted and connected, said sections having windowopenings formed therein, the material of the front section being'angedentirely around the Window open'- ing whereby to provide substantiallybox section stiles, the flange around the window opening including anattaching portion at substantially right anglestheretojthe rear sectionat the Window opening therein overlapping'a portion ofY said ange andbeing folded about said attach-V ing portion, and ller members arrangedwithin the door and between the front and rear sections.

MARVIN G. MARTIN.

